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In Reply to: RE: Bad Choice for Audio posted by Cleantimestream on June 28, 2015 at 09:56:18
"The Scott with 4 nuvistors is today one of three I still own."
I doubt the nuvistors are responsible for whatever you're hearing. Those old tuners used nuvistors as RF amps for FM signals, a function in which linearity is immaterial. In fact, later elements in the signal chain completely quash any amplitude variations prior to the audio detector. Of course, if you're far enough away from the towers that the S/N is suffering with lesser tuners, the nuvistors could certainly serve to reduce the noise.
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Buy Chinese. Bury freedom.
Follow Ups:
"I doubt the nuvistors are responsible for whatever you're hearing. Those old tuners used nuvistors as RF amps for FM signals, a function in which linearity is immaterial."
Actually, you want linearity in the front end of an FM tuner. To avoid intermod distortion products coming from the mixing of strong FM stations from trashing desired weaker stations.
Spectrum analyzers (FFT analyzers) running on a PC using a sound card can be markedly elucidating.
The learning curve for me was outstanding in the rain without an umbrella. I now know why an amp with 5% distortion can sound better than one with .5% and that knowledge has changed my approach to building better sounding amplifiers.
Thanks again to the genius of Richard C. Heyser.
The Mind has No Firewall~ U.S. Army War College.
"I now know why an amp with 5% distortion can sound better than one with .5%"
Hey now, you can't just say something like that and not tell us why! :)
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Buy Chinese. Bury freedom.
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